Physical Appearance: Eyeless Jack is usually described as a person in a black hoodie and an expressionless blue mask with no nose or mouth. Black liquid, a mixture of blood and tar, is dripping from the eye sockets behind the mask. His fingers are sharpened into claws, and his mouth filled with sharp teeth. Jack is nineteen years old and 5'11. He also has grey skin (formerly Caucasian) and brown hair.

Eyeless Jack is infamous for being able to successfully remove a victim's kidney while asleep.